diff --git a/openslides/assignments/static/js/assignments/base.js b/openslides/assignments/static/js/assignments/base.js
index c362db260..c6be1e718 100644
--- a/openslides/assignments/static/js/assignments/base.js
+++ b/openslides/assignments/static/js/assignments/base.js
@@ -9,97 +9,55 @@ angular.module('OpenSlidesApp.assignments', [])
     'jsDataModel',
     'gettextCatalog',
     'Config',
-    function (DS, jsDataModel, gettextCatalog, Config) {
+    'MajorityMethods',
+    function (DS, jsDataModel, gettextCatalog, Config, MajorityMethods) {
         return DS.defineResource({
             name: 'assignments/polloption',
             useClass: jsDataModel,
             methods: {
                 getVotes: function () {
                     if (!this.poll.has_votes) {
+                        // Return undefined if this poll has no votes.
                         return;
                     }
-                    var poll = this.poll;
-                    var votes = [];
-                    var config = Config.get('assignments_poll_100_percent_base').value;
-                    var impossible = false;
-                    var yes = null, no = null, abstain = null;
-                    angular.forEach(this.votes, function(vote) {
-                        if (vote.value == "Yes" || vote.value == "Votes") {
-                            yes = vote.weight;
-                        } else if (vote.value == "No") {
-                            no = vote.weight;
-                        } else if (vote.value == "Abstain") {
-                            abstain = vote.weight;
-                        }
-                    });
-                    //calculation for several candidates without yes/no options
-                    var do_sum_of_all = false;
-                    var sum_of_votes = 0;
-                    if (poll.options.length > 1 && poll.pollmethod == 'votes') {
-                        do_sum_of_all = true;
+
+                    // Initial values for the option
+                    var votes = [],
+                        config = Config.get('assignments_poll_100_percent_base').value;
+
+                    var base = this.poll.getPercentBase(config);
+                    if (typeof base === 'object') {
+                        // this.poll.pollmethod === 'yna'
+                        base = base[this.id];
                     }
-                    if (do_sum_of_all === true) {
-                        angular.forEach(poll.options, function(option) {
-                            angular.forEach(option.votes, function(vote) {
-                                if (vote.value == "Votes") {
-                                    if (vote.weight >= 0 ) {
-                                        sum_of_votes = sum_of_votes + vote.weight;
-                                    } else {
-                                        impossible = true;
-                                    }
-                                }
-                            });
-                        });
-                    }
-                    angular.forEach(this.votes, function(vote) {
-                        // check for special value
-                        var value;
+
+                    _.forEach(this.votes, function (vote) {
+                        // Initial values for the vote
+                        var value = '',
+                            percentStr = '',
+                            percentNumber;
+
+                        // Check for special value
                         switch (vote.weight) {
                             case -1:
                                 value = gettextCatalog.getString('majority');
-                                impossible = true;
                                 break;
                             case -2:
                                 value = gettextCatalog.getString('undocumented');
-                                impossible = true;
                                 break;
                             default:
                                 if (vote.weight >= 0) {
                                     value = vote.weight;
                                 } else {
-                                    value = 0;
+                                    value = 0;  // Vote was not defined. Set value to 0.
                                 }
-                                break;
                         }
-                        // calculate percent value
-                        var percentStr, percentNumber, base;
-                        if (config == "VALID") {
-                            if (poll.votesvalid && poll.votesvalid > 0) {
-                                base = poll.votesvalid;
-                            }
-                        } else if ( config == "CAST") {
-                            if (poll.votescast && poll.votescast > 0) {
-                                base = poll.votescast;
-                            }
-                        } else if (config == "YES_NO" && !impossible) {
-                            if (vote.value == "Yes" || vote.value == "No" || vote.value == "Votes"){
-                                if (do_sum_of_all) {
-                                    base = sum_of_votes;
-                                } else {
-                                    base = yes + no;
-                                }
-                            }
-                        } else if (config == "YES_NO_ABSTAIN" && !impossible) {
-                            if (do_sum_of_all) {
-                                base = sum_of_votes;
-                            } else {
-                                base = yes + no + abstain;
-                            }
-                        }
-                        if (base !== 'undefined' && vote.weight >= 0) {
+
+                        // Special case where to skip percents
+                        var skipPercents = config === 'YES_NO' && vote.value === 'Abstain';
+
+                        if (base && !skipPercents) {
                             percentNumber = Math.round(vote.weight * 100 / base * 10) / 10;
-                        }
-                        if (percentNumber >= 0 && percentNumber !== 'undefined') {
                             percentStr = "(" + percentNumber + "%)";
                         }
                         votes.push({
@@ -110,6 +68,45 @@ angular.module('OpenSlidesApp.assignments', [])
                         });
                     });
                     return votes;
+                },
+
+                // Returns 0 or positive integer if quorum is reached or surpassed.
+                // Returns negativ integer if quorum is not reached.
+                // Returns undefined if we can not calculate the quorum.
+                isReached: function (method) {
+                    if (!this.poll.has_votes) {
+                        // Return undefined if this poll has no votes.
+                        return;
+                    }
+                    var isReached;
+                    var config = Config.get('assignments_poll_100_percent_base').value;
+                    var base = this.poll.getPercentBase(config);
+                    if (typeof base === 'object') {
+                        // this.poll.pollmethod === 'yna'
+                        base = base[this.id];
+                    }
+                    if (base) {
+                        // Provide result only if base is not undefined and not 0.
+                        isReached = MajorityMethods[method](this.getVoteYes(), base);
+                    }
+                    return isReached;
+                },
+
+                // Returns the weight for the vote or the vote 'yes' in case of YNA poll method.
+                getVoteYes: function () {
+                    var voteYes = 0;
+                    if (this.poll.pollmethod === 'yna') {
+                        var voteObj = _.find(this.votes, function (vote) {
+                            return vote.value === 'Yes';
+                        });
+                        if (voteObj) {
+                            voteYes = voteObj.weight;
+                        }
+                    } else {
+                        // pollmethod === 'votes'
+                        voteYes = this.votes[0].weight;
+                    }
+                    return voteYes;
                 }
             },
             relations: {
@@ -144,10 +141,88 @@ angular.module('OpenSlidesApp.assignments', [])
                 getResourceName: function () {
                     return name;
                 },
-                // returns object with value and percent (for votes valid/invalid/cast only)
+
+                // Returns percent base. Returns undefined if calculation is not possible in general.
+                getPercentBase: function (config, type) {
+                    var base;
+                    switch (config) {
+                        case 'CAST':
+                            if (this.votescast <= 0 || this.votesinvalid < 0) {
+                                // It would be OK to check only this.votescast < 0 because 0
+                                // is checked again later but this is a little bit faster.
+                                break;
+                            }
+                            base = this.votescast;
+                            /* falls through */
+                        case 'VALID':
+                            if (this.votesvalid < 0) {
+                                base = void 0;
+                                break;
+                            }
+                            if (typeof base === 'undefined' && type !== 'votescast' && type !== 'votesinvalid') {
+                                base = this.votesvalid;
+                            }
+                            /* falls through */
+                        case 'YES_NO_ABSTAIN':
+                        case 'YES_NO':
+                            if (this.pollmethod === 'yna') {
+                                if (typeof base === 'undefined' && type !== 'votescast' && type !== 'votesinvalid' && type !== 'votesvalid') {
+                                    base = {};
+                                    _.forEach(this.options, function (option) {
+                                        var allVotes = option.votes;
+                                        if (config === 'YES_NO') {
+                                            allVotes = _.filter(allVotes, function (vote) {
+                                                // Extract abstain votes in case of YES_NO percent base.
+                                                // Do not extract abstain vote if it is set to majority so the predicate later
+                                                // fails and therefor we get an undefined base. Reason: It should not be possible
+                                                // to set abstain to majority and nevertheless calculate percents of yes and no.
+                                                return vote.value !== 'Abstain' || vote.weight === -1;
+                                            });
+                                        }
+                                        var predicate = function (vote) {
+                                            return vote.weight < 0;
+                                        };
+                                        if (_.findIndex(allVotes, predicate) === -1) {
+                                            base[option.id] = _.reduce(allVotes, function (sum, vote) {
+                                                return sum + vote.weight;
+                                            }, 0);
+                                        }
+                                    });
+                                }
+                            } else {
+                                // this.pollmethod === 'votes'
+                                var predicate = function (option) {
+                                    return option.votes[0].weight < 0;
+                                };
+                                if (_.findIndex(this.options, predicate) !== -1) {
+                                    base = void 0;
+                                } else {
+                                    if (typeof base === 'undefined' && type !== 'votescast' && type !== 'votesinvalid' && type !== 'votesvalid') {
+                                        base = _.reduce(this.options, function (sum, option) {
+                                            return sum + option.votes[0].weight;
+                                        }, 0);
+                                    }
+                                }
+                            }
+                    }
+                    return base;
+                },
+
+                // Returns object with value and percent for this poll (for votes valid/invalid/cast only).
                 getVote: function (type) {
-                    var value, percentStr, vote;
-                    switch(type) {
+                    if (!this.has_votes) {
+                        // Return undefined if this poll has no votes.
+                        return;
+                    }
+
+                    // Initial values
+                    var value = '',
+                        percentStr = '',
+                        percentNumber,
+                        vote,
+                        config = Config.get('assignments_poll_100_percent_base').value;
+
+                    switch (type) {
                         case 'votesinvalid':
                             vote = this.votesinvalid;
                             break;
@@ -158,35 +233,34 @@ angular.module('OpenSlidesApp.assignments', [])
                             vote = this.votescast;
                             break;
                     }
-                    if (this.has_votes && vote) {
-                        switch (vote) {
-                            case -1:
-                                value = gettextCatalog.getString('majority');
-                                break;
-                            case -2:
-                                value = gettextCatalog.getString('undocumented');
-                                break;
-                            default:
+
+                    // Check special values
+                    switch (vote) {
+                        case -1:
+                            value = gettextCatalog.getString('majority');
+                            break;
+                        case -2:
+                            value = gettextCatalog.getString('undocumented');
+                            break;
+                        default:
+                            if (vote >= 0) {
                                 value = vote;
-                        }
-                        if (vote >= 0) {
-                            var config = Config.get('assignments_poll_100_percent_base').value;
-                            var percentNumber;
-                            if (config == "CAST" && this.votescast && this.votescast > 0) {
-                                percentNumber = Math.round(vote * 100 / this.votescast * 10) / 10;
-                            } else if (config == "VALID" && this.votesvalid && this.votesvalid >= 0) {
-                                if (type === 'votesvalid'){
-                                    percentNumber = Math.round(vote * 100 / this.votesvalid * 10) / 10;
-                                }
+                            } else {
+                                value = 0; // value was not defined
                             }
-                            if (percentNumber !== 'undefined' && percentNumber >= 0 && percentNumber <=100) {
-                                percentStr = "(" + percentNumber + "%)";
-                            }
-                        }
+                    }
+
+                    // Calculate percent value
+                    var base = this.getPercentBase(config, type);
+                    if (base) {
+                        percentNumber = Math.round(vote * 100 / (base) * 10) / 10;
+                        percentStr = '(' + percentNumber + ' %)';
                     }
                     return {
                         'value': value,
-                        'percentStr': percentStr
+                        'percentStr': percentStr,
+                        'percentNumber': percentNumber,
+                        'display': value + ' ' + percentStr
                     };
                 }
             },
diff --git a/openslides/assignments/static/js/assignments/site.js b/openslides/assignments/static/js/assignments/site.js
index 53889f7c6..6fa0367b9 100644
--- a/openslides/assignments/static/js/assignments/site.js
+++ b/openslides/assignments/static/js/assignments/site.js
@@ -252,77 +252,27 @@ angular.module('OpenSlidesApp.assignments.site', [
 .controller('AssignmentPollDetailCtrl', [
     '$scope',
     'MajorityMethodChoices',
-    'MajorityCalculation',
     'Config',
     'AssignmentPollDetailCtrlCache',
-    function ($scope, MajorityMethodChoices, MajorityCalculation, Config, AssignmentPollDetailCtrlCache) {
-        $scope.poll_options_with_majorities = $scope.poll.options;
+    function ($scope, MajorityMethodChoices, Config, AssignmentPollDetailCtrlCache) {
         // Define choices.
         $scope.methodChoices = MajorityMethodChoices;
         // TODO: Get $scope.baseChoices from config_variables.py without copying them.
 
         // Setup empty cache with default values.
-        if (AssignmentPollDetailCtrlCache[$scope.poll.id] === undefined) {
+        if (typeof AssignmentPollDetailCtrlCache[$scope.poll.id] === 'undefined') {
             AssignmentPollDetailCtrlCache[$scope.poll.id] = {
-                isMajorityCalculation: true,
-                isMajorityDetails: false,
                 method: $scope.config('assignments_poll_default_majority_method'),
-                base: $scope.config('assignments_poll_100_percent_base')
             };
         }
 
         // Fetch users choices from cache.
-        $scope.isMajorityCalculation = AssignmentPollDetailCtrlCache[$scope.poll.id].isMajorityCalculation;
-        $scope.isMajorityDetails = AssignmentPollDetailCtrlCache[$scope.poll.id].isMajorityDetails;
         $scope.method = AssignmentPollDetailCtrlCache[$scope.poll.id].method;
-        $scope.base = AssignmentPollDetailCtrlCache[$scope.poll.id].base;
 
-        // (re)calculate the base of poll calculations.
-        $scope.calculateBase = function() {
-            var base;
-            switch($scope.base) {
-                case 'YES_NO_ABSTAIN':
-                case 'YES_NO':
-                    if ($scope.poll.pollmethod == 'votes') {
-                        base = MajorityCalculation.options_yes_sum($scope.poll);
-                    }
-                    break;
-                case 'VALID':
-                    base = $scope.poll.votesvalid;
-                    break;
-                case 'CAST':
-                    base = $scope.poll.votescast;
-                    break;
-                // case 'DISABLED have no bases
-            }
-            return base;
-        };
-
-        // calculates if majority thresholds have been reached. Returns 0+ when reached, or negative int when not reached
         $scope.recalculateMajorities = function (method) {
             $scope.method = method;
-            $scope.calculationError = false;
-            var base_nmbr = $scope.calculateBase();
-            _.forEach($scope.poll_options_with_majorities, function(option) {
-                var optionvotes = {};
-                _.forEach(option.votes, function(vote) {
-                    switch (vote.value) {
-                        case 'Yes':
-                        case 'Votes':
-                            optionvotes.yes = vote.weight;
-                            break;
-                        case 'No':
-                            optionvotes.no = vote.weight;
-                            break;
-                        case 'Abstain':
-                            optionvotes.abstain = vote.weight;
-                            break;
-                    }
-                });
-                option.isReached = MajorityCalculation.isReached($scope.base, method, optionvotes, base_nmbr);
-                if (option.reached === 'undefined'){
-                    $scope.calculationError = true;
-                }
+            _.forEach($scope.poll.options, function (option) {
+                option.majorityReached = option.isReached(method);
             });
         };
         $scope.recalculateMajorities($scope.method);
@@ -330,10 +280,7 @@ angular.module('OpenSlidesApp.assignments.site', [
         // Save current values to cache on destroy of this controller.
         $scope.$on('$destroy', function() {
             AssignmentPollDetailCtrlCache[$scope.poll.id] = {
-                isMajorityCalculation: $scope.isMajorityCalculation,
-                isMajorityDetails: $scope.isMajorityDetails,
                 method: $scope.method,
-                base: $scope.base
             };
         });
     }
diff --git a/openslides/assignments/static/templates/assignments/assignment-detail.html b/openslides/assignments/static/templates/assignments/assignment-detail.html
index ecbe9ef72..cd363e533 100644
--- a/openslides/assignments/static/templates/assignments/assignment-detail.html
+++ b/openslides/assignments/static/templates/assignments/assignment-detail.html
@@ -174,7 +174,7 @@
           <div ng-if="!poll.has_votes">
             <strong translate>Candidates</strong>
             <ul class="list-unstyled">
-              <li ng-repeat="option in options">
+              <li ng-repeat="option in poll.options">
                 <a ui-sref="users.user.detail({id: option.candidate.id})">
                   {{ option.candidate.get_full_name() }}
                 </a>
@@ -186,11 +186,12 @@
           </div>
 
           <!-- Settings for majority calculations -->
-          <div os-perms="assignments.can_manage" ng-hide="config('assignments_poll_default_majority_method') == 'disabled' || !poll.has_votes" ng-cloak>
+          <div os-perms="assignments.can_manage" ng-show="poll.has_votes" ng-cloak>
             <div class="input-group">
               <span><translate>Required majority</translate>: </span>
               <select ng-model="method"
-                ng-change="recalculateMajorities(method)" ng-options="option.value as option.display_name | translate for option in methodChoices" />
+                      ng-change="recalculateMajorities(method)"
+                      ng-options="option.value as option.display_name | translate for option in methodChoices" />
             </div>
           </div>
           <!-- election result of poll -->
@@ -198,10 +199,10 @@
           <tr>
             <th translate>Candidates
             <th translate>Votes
-            <th ng-if="method != 'disabled'" translate>Quorum reached
+            <th translate ng-hide="method === 'disabled'">Quorum
             </th>
             <!-- candidates (poll options) -->
-            <tr ng-repeat="option in poll_options_with_majorities">
+            <tr ng-repeat="option in poll.options">
               <!-- candidate name -->
               <td>
                 <span os-perms="assignments.can_manage">
@@ -221,14 +222,18 @@
                   <div ng-repeat="vote in votes">
                     <span ng-if="poll.pollmethod == 'yna' || poll.pollmethod == 'yn'">{{ vote.label }}:</span>
                     {{ vote.value }} {{ vote.percentStr }}
-                    <div ng-if="vote.percentNumber">
+                    <div ng-if="vote.percentNumber >= 0">
                       <uib-progressbar value="vote.percentNumber" type="success"></uib-progressbar>
                     </div>
                   </div>
                 </div>
-              <td ng-if="method != 'disabled'">
-                <span ng-if="option.isReached < 0" class="text-danger" translate> Quorum not reached, {{ -option.isReached }} votes missing.</span>
-                <span ng-if="option.isReached >= 0" class="text-success" translate> Quorum reached, {{ option.isReached }} votes more than needed.</span>
+              <td ng-hide="method === 'disabled'">
+                <span ng-if="option.majorityReached >= 0" class="text-success" translate>
+                    Quorum ({{ option.getVoteYes() - option.majorityReached }}) reached.
+                </span>
+                <span ng-if="option.majorityReached < 0" class="text-danger" translate>
+                    Quorum ({{ option.getVoteYes() - option.majorityReached }}) not reached.
+                </span>
 
             <!-- total votes (valid/invalid/casts) -->
             <tr>
@@ -250,8 +255,6 @@
                 {{ poll.getVote('votescast').value }}
                 {{ poll.getVote('votescast').percentStr }}
           </table>
-          <!-- majority calculation message-->
-          <span class="text-warning" ng-if="calculationError" translate>Calculation impossible</span>
         </div>
       </div>
     </uib-tab>
diff --git a/openslides/motions/static/js/motions/base.js b/openslides/motions/static/js/motions/base.js
index 5ff619f9d..49d289db3 100644
--- a/openslides/motions/static/js/motions/base.js
+++ b/openslides/motions/static/js/motions/base.js
@@ -7,6 +7,7 @@ angular.module('OpenSlidesApp.motions', [
     'OpenSlidesApp.motions.lineNumbering',
     'OpenSlidesApp.motions.diff',
     'OpenSlidesApp.motions.DOCX',
+    'OpenSlidesApp.poll.majority',
     'OpenSlidesApp.users',
 ])
 
@@ -66,7 +67,8 @@ angular.module('OpenSlidesApp.motions', [
     'DS',
     'gettextCatalog',
     'Config',
-    function (DS, gettextCatalog, Config) {
+    'MajorityMethods',
+    function (DS, gettextCatalog, Config, MajorityMethods) {
         return DS.defineResource({
             name: 'motions/motionpoll',
             relations: {
@@ -78,61 +80,84 @@ angular.module('OpenSlidesApp.motions', [
                 }
             },
             methods: {
-                // returns object with value and percent
+                // Returns percent base. Returns undefined if calculation is not possible in general.
+                getPercentBase: function (config, type) {
+                    var base;
+                    switch (config) {
+                        case 'CAST':
+                            if (this.votescast <= 0 || this.votesinvalid < 0) {
+                                // It would be OK to check only this.votescast < 0 because 0
+                                // is checked again later but this is a little bit faster.
+                                break;
+                            }
+                            base = this.votescast;
+                            /* falls through */
+                        case 'VALID':
+                            if (this.votesvalid < 0) {
+                                base = void 0;
+                                break;
+                            }
+                            if (typeof base === 'undefined' && type !== 'votescast' && type !== 'votesinvalid') {
+                                base = this.votesvalid;
+                            }
+                            /* falls through */
+                        case 'YES_NO_ABSTAIN':
+                            if (this.abstain < 0) {
+                                base = void 0;
+                                break;
+                            }
+                            if (typeof base === 'undefined' && type !== 'votescast' && type !== 'votesinvalid' && type !== 'votesvalid') {
+                                base = this.yes + this.no + this.abstain;
+                            }
+                            /* falls through */
+                        case 'YES_NO':
+                            if (this.yes < 0 || this.no < 0 || this.abstain === -1 ) {
+                                // It is not allowed to set 'Abstain' to 'majority' but exclude it from calculation.
+                                // Setting 'Abstain' to 'undocumented' is possible, of course.
+                                base = void 0;
+                                break;
+                            }
+                            if (typeof base === 'undefined' && (type === 'yes' || type === 'no')) {
+                                base = this.yes + this.no;
+                            }
+                    }
+                    return base;
+                },
+
+                // Returns object with value and percent for this poll.
                 getVote: function (vote, type) {
                     if (!this.has_votes) {
+                        // Return undefined if this poll has no votes.
                         return;
                     }
-                    var impossible = false;
-                    var value = '';
+
+                    // Initial values
+                    var value = '',
+                        percentStr = '',
+                        percentNumber,
+                        config = Config.get('motions_poll_100_percent_base').value;
+
+                    // Check special values
                     switch (vote) {
                         case -1:
                             value = gettextCatalog.getString('majority');
-                            impossible = true;
                             break;
                         case -2:
                             value = gettextCatalog.getString('undocumented');
-                            impossible = true;
                             break;
                         default:
                             if (vote >= 0) {
                                 value = vote;
                             } else {
-                                value = 0; //value was not defined
+                                value = 0;  // Vote was not defined. Set value to 0.
                             }
-                            break;
                     }
-                    // 100% base impossible if at leat one value has set an
-                    // speacial value (-1 or -2).
-                    if (this.yes < 0 || this.no < 0 || this.abstain < 0) {
-                        impossible = true;
-                    }
-                    // calculate percent value
-                    var config = Config.get('motions_poll_100_percent_base').value;
-                    var percentStr = '';
-                    var percentNumber = null;
-                    var base = null;
-                    if (!impossible) {
-                        if (config == "YES_NO_ABSTAIN") {
-                            if (type == 'yes' || type == 'no' || type == 'abstain') {
-                                base = this.yes + this.no + this.abstain;
-                            }
-                        } else if (config == "YES_NO") {
-                            if (type == 'yes' || type == 'no') {
-                                base = this.yes + this.no;
-                            }
-                        } else if (config == "VALID" && type !== 'votescast' && type !== 'votesinvalid' &&
-                            this.votesvalid > 0) {
-                            base = this.votesvalid;
-                        } else if (config == "CAST" && this.votescast > 0) {
-                            base = this.votescast;
-                        }
-                    }
-                    if (base !== null) {
+
+                    // Calculate percent value
+                    var base = this.getPercentBase(config, type);
+                    if (base) {
                         percentNumber = Math.round(vote * 100 / (base) * 10) / 10;
-                    }
-                    if (percentNumber !== null) {
-                        percentStr = "(" + percentNumber + "%)";
+                        percentStr = '(' + percentNumber + ' %)';
                     }
                     return {
                         'value': value,
@@ -140,6 +165,25 @@ angular.module('OpenSlidesApp.motions', [
                         'percentNumber': percentNumber,
                         'display': value + ' ' + percentStr
                     };
+                },
+
+                // Returns 0 or positive integer if quorum is reached or surpassed.
+                // Returns negativ integer if quorum is not reached.
+                // Returns undefined if we can not calculate the quorum.
+                isReached: function (method) {
+                    if (!this.has_votes) {
+                        // Return undefined if this poll has no votes.
+                        return;
+                    }
+
+                    var isReached;
+                    var config = Config.get('motions_poll_100_percent_base').value;
+                    var base = this.getPercentBase(config, 'yes');
+                    if (base) {
+                        // Provide result only if base is not undefined and not 0.
+                        isReached = MajorityMethods[method](this.yes, base);
+                    }
+                    return isReached;
                 }
             }
         });
@@ -246,7 +290,7 @@ angular.module('OpenSlidesApp.motions', [
 
                     for (var i = 0; i < changes.length; i++) {
                         var change = changes[i];
-                        if (statusCompareCb === undefined || statusCompareCb(change.rejected)) {
+                        if (typeof statusCompareCb === 'undefined' || statusCompareCb(change.rejected)) {
                             html = lineNumberingService.insertLineNumbers(html, lineLength);
                             html = diffService.replaceLines(html, change.text, change.line_from, change.line_to);
                         }
diff --git a/openslides/motions/static/js/motions/site.js b/openslides/motions/static/js/motions/site.js
index 0f9b58b26..99b016a93 100644
--- a/openslides/motions/static/js/motions/site.js
+++ b/openslides/motions/static/js/motions/site.js
@@ -740,42 +740,37 @@ angular.module('OpenSlidesApp.motions.site', [
 .controller('MotionPollDetailCtrl', [
     '$scope',
     'MajorityMethodChoices',
-    'MajorityCalculation',
     'Config',
     'MotionPollDetailCtrlCache',
-    function ($scope, MajorityMethodChoices, MajorityCalculation, Config, MotionPollDetailCtrlCache) {
+    function ($scope, MajorityMethodChoices, Config, MotionPollDetailCtrlCache) {
         // Define choices.
         $scope.methodChoices = MajorityMethodChoices;
         // TODO: Get $scope.baseChoices from config_variables.py without copying them.
 
         // Setup empty cache with default values.
-        if (MotionPollDetailCtrlCache[$scope.poll.id] === undefined) {
+        if (typeof MotionPollDetailCtrlCache[$scope.poll.id] === 'undefined') {
             MotionPollDetailCtrlCache[$scope.poll.id] = {
-                isMajorityCalculation: true,
-                isMajorityDetails: false,
                 method: $scope.config('motions_poll_default_majority_method'),
-                base: $scope.config('motions_poll_100_percent_base')
             };
         }
 
         // Fetch users choices from cache.
-        $scope.isMajorityCalculation = MotionPollDetailCtrlCache[$scope.poll.id].isMajorityCalculation;
-        $scope.isMajorityDetails = MotionPollDetailCtrlCache[$scope.poll.id].isMajorityDetails;
         $scope.method = MotionPollDetailCtrlCache[$scope.poll.id].method;
-        $scope.base = MotionPollDetailCtrlCache[$scope.poll.id].base;
 
         // Define result function.
         $scope.isReached = function () {
-            return MajorityCalculation.isReached($scope.base, $scope.method, $scope.poll);
+            return $scope.poll.isReached($scope.method);
+        };
+
+        // Define template controll function
+        $scope.hideMajorityCalculation = function () {
+            return typeof $scope.isReached() === 'undefined' && $scope.method !== 'disabled';
         };
 
         // Save current values to cache on detroy of this controller.
         $scope.$on('$destroy', function() {
             MotionPollDetailCtrlCache[$scope.poll.id] = {
-                isMajorityCalculation: $scope.isMajorityCalculation,
-                isMajorityDetails: $scope.isMajorityDetails,
                 method: $scope.method,
-                base: $scope.base
             };
         });
     }
@@ -1146,7 +1141,7 @@ angular.module('OpenSlidesApp.motions.site', [
         // open dialog for new amendment
         $scope.newAmendment = function () {
             var dialog = MotionForm.getDialog();
-            if (dialog.scope === undefined) {
+            if (typeof dialog.scope === 'undefined') {
                 dialog.scope = {};
             }
             dialog.scope = $scope;
diff --git a/openslides/motions/static/templates/motions/motion-detail.html b/openslides/motions/static/templates/motions/motion-detail.html
index dfb253778..4ac22c102 100644
--- a/openslides/motions/static/templates/motions/motion-detail.html
+++ b/openslides/motions/static/templates/motions/motion-detail.html
@@ -295,13 +295,12 @@
                     <td>
                     <td>
                       <div os-perms="motions.can_manage"
-                          ng-hide="config('motions_poll_default_majority_method') == 'disabled' ||
-                            isReached() === undefined" ng-cloak>
+                           ng-hide="hideMajorityCalculation()"
+                           ng-cloak>
                         <div class="input-group">
                           <span><translate>Required majority</translate>: </span>
-                          <select ng-init="config('motions_poll_default_majority_method')"
-                              ng-model="$parent.method"
-                              ng-options="option.value as option.display_name | translate for option in methodChoices">
+                          <select ng-model="$parent.method"
+                                  ng-options="option.value as option.display_name | translate for option in methodChoices">
                         </div>
                       </div>
                   <tr>
@@ -309,10 +308,10 @@
                     <td>
                       <div os-perms="motions.can_manage">
                         <span class="text-success" ng-if="isReached() >= 0" translate>
-                          Quorum reached, {{ isReached() }} votes more than needed.
+                          Quorum ({{ voteYes.value - isReached() }}) reached.
                         </span>
                         <span class="text-danger" ng-if="isReached() < 0" translate>
-                          Quorum not reached, {{ -(isReached()) }} votes missing.
+                          Quorum ({{ voteYes.value - isReached() }}) not reached.
                        </span>
                       </div>
 
diff --git a/openslides/poll/static/js/poll/majority.js b/openslides/poll/static/js/poll/majority.js
index dfe5ad9c3..f2461183e 100644
--- a/openslides/poll/static/js/poll/majority.js
+++ b/openslides/poll/static/js/poll/majority.js
@@ -36,81 +36,6 @@ angular.module('OpenSlidesApp.poll.majority', [])
             },
         };
     }
-])
-
-.factory('MajorityCalculation', [
-    'MajorityMethods',
-    function (MajorityMethods) {
-        return {
-            //calculate the base for yes-based multi-option polls
-            options_yes_sum: function(poll){
-                var yes = 0;
-                var error = false;
-                if (poll.options) {
-                    _.forEach(poll.options, function(option) {
-                        _.forEach(option.votes, function(vote) {
-                            if (vote.value == 'Yes' || vote.value == 'Votes'){
-                                if (vote.weight >= 0){
-                                    yes = yes + vote.weight;
-                                } else {
-                                    error = true;
-                                }
-                            }
-                        });
-                    });
-                    if (!error) {
-                        return yes;
-                    }
-                } else if (poll.yes && poll.yes >= 0) {
-                    return poll.yes;
-                } // else: undefined
-            },
-
-            // returns 0 or positive integer if quorum is reached or surpassed
-            // sum (optional): a different base to calculate with
-            isReached: function (base, method, votes, sum) {
-                var methodFunction = MajorityMethods[method];
-                var yes = parseInt(votes.yes);
-                var no = parseInt(votes.no);
-                var alt_base = parseInt(sum);
-                var abstain = parseInt(votes.abstain);
-                var valid = parseInt(votes.votesvalid);
-                var cast = parseInt(votes.votescast);
-                var result;
-                var isValid = function (vote) {
-                    return !isNaN(vote) && vote >= 0;
-                };
-                if (isValid(alt_base) && isValid(yes)) {
-                    result = methodFunction(yes, alt_base);
-                } else {
-                    switch (base) {
-                        case 'YES_NO_ABSTAIN':
-                            if (isValid(yes) && isValid(no) && isValid(abstain)) {
-                                result = methodFunction(yes, yes + no + abstain);
-                            }
-                            break;
-                        case 'YES_NO':
-                            if (isValid(yes) && isValid(no)) {
-                                result = methodFunction(yes, yes + no);
-                            }
-                            break;
-                        case 'VALID':
-                            if (isValid(yes) && isValid(valid)) {
-                                result = methodFunction(yes, valid);
-                            }
-                            break;
-                        case 'CAST':
-                            if (isValid(yes) && isValid(cast)) {
-                                result = methodFunction(yes, cast);
-                            }
-                            break;
-                        // case 'DISABLED': result remains undefined
-                    }
-                }
-                return result;
-            }
-        };
-    }
 ]);
 
 }());